This is made of dozens of separate thin, hemi-spherical lenses called lenticles. Place a transparent plastic layer on top of the doubled-up image. Way, it's just a horribly confusing mess, but not for long! Next, you If you look at the doubled-up image printed this Weaves them together so the strips from the first imageĪlternate with the strips from the second. The program cuts each image into dozens of thin strips and Take your two different images and load them into a Both these factors-the pitch and the viewing distance-have to be taken into account to make a convincing lenticular print. They also work differently at different distances from the viewer. Different lenticulars have what's called a different pitch, which is the number of lenticles per inch (LPI). Each one is a hemispherical plastic lens that magnifies only one of the sliced images underneath it, depending on where you're eyes are in relation to the book cover. Now you can see the individual lenticles. Here's the cover of my book (from the top photo) in close-up. (we even tell you how to make a lens of your own, in about 5 seconds flat, from a drop of water). You can find more in our main article on lenses Lenses got their nameīecause some of them just happen to look a bit like lentils! Light to make things look bigger or smaller. Lenticulars are so-called because they use The connection between "lentil" and "lenticular" is Vegetarians and-no-they have nothing to do with how book covers Nothing! Lentils are tiny orange, green, or brown pulses popular with Convex lenses bulge out in the middle like lentils, while concave lenses "cave in" in the middle and bulge out at the edges. Photo: Lentils like this one gave lenses their name.
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